You are equating all Palestinians as Hamas which is just factually wrong. Israel are in did fighting a war to commit genocide of the Palestinian people in Gaza. This is not even debatable or something that Israel itself hides.
About half the population in Gaza are children. They also represent a significant share of the casualties and injured. Tell me how any of those children want to exterminate Jews and how Israel needs to defend itself from them. Tell me how indiscriminate bombings like that are justified.
And yes Israel did start this, decades and decades ago, and they are continuing with their plan. Hamas and Israel are both benefitting from this at the expense of civilian casualties.